7-62 Service Guide N5242-90001
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing the Lithium Battery N5242A
Removing and Replacing the Lithium Battery
Tools Required
• T-10 TORX driver (set to 9 in-lb)
• T-20 TORX driver (set to 21 in-lb)
• ESD grounding wrist strap
Removal Procedure
Refer to Figure 7-29 for this procedure.
1. Disconnect the power cord.
2. Remove the outer and inner covers. Refer to “Removing the Covers” on page 7-6.
3. Remove the A17 CPU board. Refer to “Removing and Replacing the A17 CPU Board
Assembly” on page 7-22.
4. Remove 15 top cover attachment screws (item
①
).
5. Lift the top cover enough to disconnect the hard disk drive cable (item
②
) from the
CPU board, then remove the top cover (with the hard disk drive attached) from the A17
CPU board assembly.
6. Remove the battery from the battery holder by lifting it at the open end of the holder
and then sliding it from under the clip (item
③
).
7. DO NOT THROW AWAY THE BATTERY. COLLECT IT AS SMALL CHEMICAL
WASTE. Refer to “Lithium Battery Disposal” on page 1-8 for additional information on
battery disposal.
Replacement Procedure
1. Reverse the order of the removal procedure following all instructions included with the
new battery.
2. Perform the post-repair adjustments, verifications, and performance tests that pertain
to this removal procedure. Refer to Table 7-2 on page 7-64.
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